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news Zetor 4 valve technology
- Thread starter Renze
- Start date
Note the intake manifold bolting to cylinder head. I have allways wondering why it isnt done that way before. I think ProEngineering cast simulator have told not to do fat flanges to thin cast part 
so they use bushes now...
so they use bushes now...
- Joined
- Jul 5, 2003
- Messages
- 3,975
- Location
- Laag Zuthem
- First name
- Renze
Machinery:
1976 5718
1978 5718 35kmh: Work in progress
1967 3011
You mean the bushes that space the long manifold bolts to the head ?
I suppose it is to create extra elasticity: A longer bolt can stretch more when the manifold grows from the heat.
On truck bodies, Mercedes also advises the use of long bolts so that the bolts can stretch, before creating high peak strains between truck frame and superstructure when the truck frame tordates on uneven roads or terrain...
I suppose it is to create extra elasticity: A longer bolt can stretch more when the manifold grows from the heat.
On truck bodies, Mercedes also advises the use of long bolts so that the bolts can stretch, before creating high peak strains between truck frame and superstructure when the truck frame tordates on uneven roads or terrain...
Renze
The injector arrangement looks interesting ? Any ideas ?
Mike
The injector arrangement looks interesting ? Any ideas ?
Mike
- Joined
- Jul 5, 2003
- Messages
- 3,975
- Location
- Laag Zuthem
- First name
- Renze
Machinery:
1976 5718
1978 5718 35kmh: Work in progress
1967 3011
I guess the injectors are built into the heads ??
- Joined
- Jan 24, 2008
- Messages
- 18
- First name
- HeffronValley
injectors at that angle usually mean precups, seems like everytime some new emission standard comes along fuel economy suffers and more crutches are needed to get them to start. Not Zetors fault, the 7211 was perfection as an engine.
No, you are wrong
7211 was second best.
7745 was the best. It had even more power but with less fuel.
Thought i must admit you, that 7211 had so smooth engine sound. The best that zetor ever have got in 4 pot engine. When we were rotating sawmill with it, EVERYBODY were wondering its smooth engine running! But it ate more fuel and gave more smoke, but less power than 7745.
7211 was second best.
7745 was the best. It had even more power but with less fuel.
Thought i must admit you, that 7211 had so smooth engine sound. The best that zetor ever have got in 4 pot engine. When we were rotating sawmill with it, EVERYBODY were wondering its smooth engine running! But it ate more fuel and gave more smoke, but less power than 7745.
